It is an open question in general, whether the homogeneous nucleation
process follows the Landau Theory in which the bcc precursor is
favored in the early stages of crystal nucleation [1]}
or the Ostwald step rule [2]} according to which a
primary crystal phase could be different from the the fcc one. Our
findings show that aluminium follows a single step process with an
onset of homogeneous nucleation showing emerging embryos with a fcc
ordering. The resulting nuclei grow in a rather patchy shape with
a small amount of hcp stacking fault defects. This nucleation the
scenario is different from the Lennard-Jones case
[3]}, [4]} which follows the Landau theory and the
Ostwald step rule. The present results confirm very recent molecular
dynamics simulations [5]}, [6]}.
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